and white college graduates and working class voters voted in 2008. minorities80/20,obama. whitecollege graduates a four-point deficit, and the right hand column you see how much demographic change we have just in the last four years based on current population survey eligible voters. according to be sedated, we've seen an increase of three points in the share of eligible voters were minority's and a decrease of three points in the share of voters who are white noncollege or working class. that's quite a lot of change in a short period of time. let's just think a bit about what these figures mean, the figures from 2008 and the figures for today. even though it looks like the minority vote usher should go up, let's just say it does not. but let's say that obama gets again the 80% of the minority vote he got in the 2008. let's get nearly loses white college graduates by four-point. it means that you actually be competitive in this race, mitt romney would have to get double john mccain's margin of 18 points among the white working class in this election. that's youth turnout doesn't change